Fans cheer in "The Pen" as the Mariners beat the Astros during the M's home opener on Monday, April 8, 2013 at Safeco Field in Seattle. The Mariners kicked off their 2013 home season against the Houston Astros.

Fans cheer in "The Pen" as the Mariners beat the Astros during the M's home opener on Monday, April 8, 2013 at Safeco Field in Seattle. The Mariners kicked off their 2013 home season against the Houston Astros.

Photo: JOSHUA TRUJILLO

Fans cheer in "The Pen" as the Mariners beat the Astros... Photo-4443059.59995 - seattlepi.com